[cisco-voip] Phones reset... For no reason

[Grabowski, David]

CM 3.3(4)sr2. One pub, one sub. About 50 phones, all 7960's.

Over the weekend, I upgraded from OS 2000-2-6sr5 to 2000-2-7sr2.

This afternoon, for seemingly no reason, most of our phones just reset.
Event logs on the sub show a deregistration. Nothing else.

Opened a case with TAC. They claim that since our servers
(MCS-7825-1133) are configured for autonegotiation, as are our 6500
switches, that this must be the problem. I disagree.

1. They've been this way for more than a year.
2. No (as in zero) errors on the switch ports. No (as in zero) errors on
the servers (netstat -e). Usually, when there's an autonegotiation
problem, we'd see errors
3. We have a third-party app that monitors the server, down to the
windows services. If there was a connectivity issue (such that most of
the phones would lose connection to it), one would figure that our
monitoring app would have had issues connecting to the server and
verifying that the services were up

The only things that have happened recently are..

1. The OS upgrade mentioned above
2. I was using IP Communicator on a desktop. Couldn't do a meet-me
conference -- not sure why not. Event logs show errors with
"ConferenceNoMoreResourcesAvailable"  (I doubt that this is related,
just including it here for completeness)

Any ideas?
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